Transom-lifter



(Model.) 'I v C. HROMAS 8v P. MACH.

TRANSOM LIFTER.

Patented Nov. 6, 1888.

` lj'esyesf Q. 8,

llriTTnn STATES PATTNT @Trina CHARLES BROMAS AND FRANK MACH, OF DAVIDCITY, NEBRASKA.

TRANSOM-LIFTER.

SPECIFICATION forming part of Letters Patent No. 392,560, dated November6, 1888.

Application filed May 28, 1888. Serial No. 275,409. (Model.)

To all whom, t may concern:

Be 1t known that we, CHARLES HRoMAs and y FRANK MACH, citizens oftheUnited States,

residing at David City, in the county of Butler and State of Nebraska,have invented certain new and useful Improvements in ransom Lifter andLock Combined; and we do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to whichit appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements intransom-lifters; and it consists in a certain novel arrangement andcombination of parts, as will be hereinafter more fully set forth in thespecification, and pointed out in the claim.

The object of the invention is to construct a device which can be morereadily operated than those heretofore in use and with less effort, andat the same time to present a dcvice which will be of attractiveappearance.

Another object of our invention is to construct a device which will besimple and not liable to get out oi" order, and which will at the sametime be inexpensive to manufacture.

lu the accompanying drawings, forming a part of this specification, andon which similar letters of reference indicate the same orcorresponding` features, Figure l is a front view of our improved deviceapplied to the door-frame and transom and showing the latter partlyopen. Fig. 2 is a side view thereof, showing our improved device partlyin section. Fig. 3 is a detail view of a portion of our device.

The letter A designates one of the timbers constituting the door-frame,the same being of the usual or any approved construction, and extendingupwardly and forming one side of the frame inclosing the transom; andthe letter B designates the transom hinged at its lower edge, C, to thecross-beam D, connecting together the two uprights coustituting thedoor-frame.

Attached securely by screws or otherwise, as may be desired, to the sideof the transom is an angular plate, E, slotted in itsoutwardly-extending portion F, as more clearly seen in Fig. 2, and inwhich slot works one end of the crank-arm G, which arm extends from theshaft H, mounted in suitable bearings secured to the door-frame. Inorder to keep this shaft and its co-operating parts free from dirt anddust, and to make the appearance thereof more attractive to the eye, wecover them with a casing, J, and on the shaft H, opposite to thecrank-arm, we mount the gear-wheel K, which intermeshes with therack-bar L, formed on one end of the lifting rod M, its lower end beingscrew-threaded, as shown at N. The lower portion,` N, of this rodextends through the box C, in which is mounted the guiding-block l?.This block l? has its front face provided with a groove, Q, in which thelower portion of the rod lies, and said block, near its lower end, has atransverse cut or slot, Q', and in said slot is seated or located one ofthe intermeshing pinions, that portion of the block below said slot Qbeing considerably recessed in order to admit of the collar of the saidpinion extending therethrough.

An intermeshing gear-wheel, T, is mounted in the side of the box O, itsshaft U having its outer end provided. with a crank and handle, V, sothat when motion is imparted to the shaft U by means of the crank therevolution of its miter wheel or pinion T revolves its fellow It, whoseinterior screw-threads, err gaging with those upon the lower end, N, ofthe lifting-rod, cause the said rod to go up or down, according to thedirection in which the pinion revolves, and in consequence thereof thepinion K and the rack-bar L cause the descent or ascent of the arm G andthe transom to which the said arm is attached.

It will be observed that we can by our improved "device hold the transomat whatever point we desire, and, so to speak, lock it in that position,for at whatever point it may be when we cease to revolve thecrank-handle at that point exactly will it remain until the crank isagain revolved.

fix

Having thus fully described our invention, voives, and through which itscollar descends, Io what we claim as new, and desire to secure by and acasing to cover the said block..

Letters Patent, is- In testimony whereof we afix our signatures In atransom-lifter, the combination, with in presence of two witnesses.

the lifting-rod and gear-wheels foi1 giving CHAS. HROMAS.` motion to thesame, of a holding and guid- FRANK MACH. ing block grooved on its frontface to guide Witnesses:

the rod, and having a slot at right angles J. Gr. Ross,

thereto7 in which the pinion is sented and re- MATT MILLER.

